An intercomparison of sound pressure standards

Project Description

The project will compare primary calibrations of LS1P and LS2P microphones according to IEC 1094-2.

There is considerable interest in participating in such an intercomparison. To ease the burden on the coordinating laboratories and ensure that the work is completed in a reasonable time, the measurements will be conducted in four circuits as described on the attached sheet.

Potential participants are invited to contact the proposer with details of:

  • which microphones they would calibrate (LS1, LS2 or both),
  • the frequency range they would use, and
  • any periods when they would not be able to calibrate the microphones

so that a project plan can be prepared before 31/3/97.
It is expected that the project could be agreed at the next Acoustics EUROMET meeting in May 97.
The first exchange of microphones could also take place then.

NPL proposes to act as co-ordinator.

Final Report 2005-02-07

Final report (NPL Report DQL-AC005) has been completed and circulated to participants. The report can be downloaded here>>.

Acoustics, Ultrasound and Vibration (AUV)
Richard Bahram, NPL (United Kingdom)
Coordinating Institute
NPL (United Kingdom)
Further Partners
DPLA (Denmark)
IA (Spain)